Stiffness of railway soil-steel structures

• Autorzy: Machelski C.

Identyfikatory

DOI

10.1515/sgem-2015-0042

• Języki publikacji: EN

Abstrakty

EN

The considerable influence of the soil backfill properties and that of the method of compacting it on the stiffness of soilsteel structures is characteristic of the latter. The above factors (exhibiting randomness) become apparent in shell deformation measurements conducted during construction and proof test loading. A definition of soil-shell structure stiffness, calculated on the basis of shell deflection under the service load, is proposed in the paper. It is demonstrated that the stiffness is the inverse of the deflection influence function used in structural mechanics. The moving load methodology is shown to be useful for testing, since it makes it possible to map the shell deflection influence line also in the case of group loads (concentrated forces), as in bridges. The analyzed cases show that the shell’s span, geometry (static scheme) and the height of earth fill influence the stiffness of the structure. The soilsteel structure’s characteristic parameter in the form of stiffness k is more suitable for assessing the quality of construction works than the proposed in code geometric index ω applied to beam structures. As shown in the given examples, parameter k is more effective than stiffness parameter λ used to estimate the deformation of soil-steel structures under construction. Although the examples concern railway structures, the methodology proposed in the paper is suitable also for road bridges.

Słowa kluczowe

EN

soil-steel structure; numerical analysis; stiffness of structure; proof test

• Wydawca: De Gruyter
• Czasopismo: Studia Geotechnica et Mechanica
• Rocznik: 2015
• Tom: Vol. 37, nr 4
• Strony: 29--36
• Opis fizyczny: Bibliogr. 12 poz., tab., rys.

Twórcy

autor

Machelski C.

• Wrocław University of Technology

Bibliografia

• [1] DUNCAN J.M., Behaviour and Design of Long Span Metal Culverts, ASCE, Convention “Soil-Structure Interaction for Shallow Foundations and Buried Structures”, San Francisco, USA, October 1977.
• [2] MACHELSKI C., Modelowanie obiektów gruntowo-powłokowych. Modelling of soil-steel bridge structures, Dolnośląskie Wydawnictwo Edukacyjne, Wrocław 2008, (in Polish).
• [3] MADRYAS C., KOLONKO A., WYSOCKI L., Konstrukcje przewodów kanalizacyjnych. Sewer structures, Wrocław University of Technology Publishing House, Wrocław 2002, (in Polish).
• [4] MACHELSKI C., Budowa konstrukcji gruntowo-powłokowych. The construction of soil-steel structures, Dolnośląskie Wydawnictwo Edukacyjne, Wrocław 2013, (in Polish).
• [5] MACHELSKI C., MICHALSKI J.B., JANUSZ L., Deformation Factors of Buried Corrugated Structures, Journal of the Research Board, Transportation Research Board of Nationals Academies, Washington D.C., 2009, 70–75.
• [6] MACHELSKI C., Kinematic method for the determination of influence function of internal forces in the steel shell of soilsteel Bridges, Studia Geotechnica et Mechanica, 2010, No. 3, 27–40.
• [7] PETTERSSON L., Full Scale Tests and Structural Evaluation of Soil Steel Flexible Culverts with low High of Cover, Doctoral Thesis in Civil and Architectural Engineering Stockholm, 2007.
• [8] BAYOGLU FLANER E., SUNDQUIST H., Full-scale testing of two corrugated steel box culverts with different crown stiffness, Archives of Institute of Civil Engineering, 2007, No 1.
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• [10] MACHELSKI C., Dependence of deformation of soil-shell structure on the direction of load passage, Bridge and Road, 2014, 13, 223–233.
• [11] BĘBEN D., Numerical analysis of soil-steel bridge structure, The Baltic Journal of Road and Bridge Engineering, 2009, 4, 13–21.
• [12] BURDET O., CORTHAY S., Static and dynamic load testing of Swiss bridges, International Bridge Conference Warsaw ’94. Proceedings. June 20–22, 1994, Vol. 2. Analytical evaluation of bridges bridge management system. Warszawa: IBDiM, 1994, 13–22.